I use Hi Soft, very similar to asahi, and i love them. I’m a bit of a knife snob, all my knives are carbon steel, with very fine, sharp edges. I sharpen at roughly 12* per side. My point is that even with these edges, these boards are great because they dont affect my edges at all. I can easily go a year between sharpenings, and even then, the edges are never damaged because of cutting surface. They’re also very sanitary, they dont gouge like other synthetics, which is where bacteria grow. They’re also very can be bleached or sanded, should the need ever arise. Sent from my iPad using Tapatalk